Lexus Service In The United Arab Emirates

dear sirI have sent my Lx570 2014 to service (100K Km) the service was bad from the representative and also I explain to him on the previous service (90K km) I have complained about a noise from the engine while driving! and they say there is nothing wrong!! that time the vehicle was still under the warranty! just now after only 10,000 km on the next service I have complained again about the same noise! and they have mentioned the have found some part making the noise and I have to replace it? but this time I have to pay! because the vehicle is out of warranty!! their are many other things with the bad service and the customer care in the UAE are not taking the compline seriously !